Datasheet > MAX14626

MAX14626

更新时间： 2024-10-03 07:15:47

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描述
High-Voltage Reverse-Input-Capable 4–20mA Current Loop Protector

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MAX14626 数据手册

19-6257; Rev 0; 3/12

E V A L U A T I O N K I T A V A I L A B L E

MAX14626

High-Voltage Reverse-Input-Capable 4–20mA

Current Loop Protector

General Description

Benefits and Features

The MAX14626 current loop protector features a current-

limit switch to prevent damage to the sensor devices due

to faulty current loop conditions. The current-limit switch

features a 25I (typ) on-resistance and operates from a

+2.3V to +36V input voltage range. The accurate current

limit is set to 30mA, making the part ideal for protecting

the sensor reading devices.

S High Performance

Low On-Resistance 25I (typ)

Accurate Q10% Current Limit

+2.3V to +40V Wide Supply Voltage Range

Low Operating Current

Ultra-Low Temperature Coefficient

S Robust Protection for Sensors

The MAX14626 handles an overcurrent event in a con-

tinuous current-limit mode. Additional safety features

include thermal shutdown to prevent overheating and

reverse-input blocking to protect from being reverse con-

nected into the sensor.

Avoids Power Dissipation Issues Compared to

Discrete Solutions

Thermal Shutdown

Reverse Input Protection

The device is available in a tiny 6-pin (3mm x 3mm),

TDFN exposed pad package and is specified over the

-40NC to +85NC extended temperature range.

S Saves Space in Compact Systems

Eliminates Need for Discrete PTC Poly Switch,

Zener Diodes, and Resistors

3mm x 3mm, 6-Pin TDFN Package

Applications

Ordering Information appears at end of data sheet.

Industrial Current Loop Control

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX14626.related.

Typical Operating Circuit

4–20mA CURRENT

MAX14626

SENSOR

(4–20mA)

CURRENT

OUT

LOAD

ADC

CONTROL AND

PROTECTION

REF

SUPPLY

CURRENT LIMIT

GATE CONTROL

GND

�� Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7 8

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